Is there anything that can be done to improve the accuracy and/or consistency? Maybe a flash at the dealer? My economy and fuel used DIC numbers are usually off compared to actuals based on the fill up quantity and mileage driven. At every fill up I reset the #2 trip meter/fuel economy average and the fuel used quantity. Also at fill ups I enter mileage and fuel quantities into my phone app and then compare. The DIC is almost always 10-20% off - always on the optimistic side. (Although occasionally it is spot on). I know there is some variation due to fill up technique, pump differences, atmospheric conditions, etc, but the difference seems excessive. Yesterday I put 11.2 gallons in according to the pump but the DIC said I only had used 9.3. I think I am being very careful and consistent when filling up, but maybe some fill ups I'm not really getting it full?